Journal-bearing seal



1930- c. c. SPREEN 7 1,780,249

' JOURNAL BEARING SEAL Filed Dec. 30, 1926 Charks 6! fi teen Inventor Attorneys Q PATENT) OFF/ICE" I 1 menus at, 1am. Serial Io. 151,511.

My invention to journalfbearing seals, and particularly to means for sealing the drive shaft aperture in the of a refrigerantcompressor, andthe principal ob- ."ect of my invention is to provide new. and mprovedmeansfor this purpose.)v In the drawings accompanym this specification" and forming-a partof this application I have showmforpurposes of illustration, one-form which my invention may assume, and in these" drawings the" single figure is a fragmentary 7 central vertical s';ection thro'u h a compressor f showing, the-embodiment o 'my invention:

scribed may be variously changed and mod-' ified without deparfigg from the spirit of U my invention or sac cingth advantages thereof, and it will therefore be understood thatthe disclosure herein. is illustrative only,

herein disclosed.

In'the embodiment of my invention herein:

shown therlower portion .of-the compressor easing 11 is provided with a' closedbearing 12 and an openeend beari g 13 'g t jointly support a crank shaftli which rep ceiv'es between the bearings 12 and 13 the usual rod 15. The shaft pro-e jects beyond'the'open-end bearing 13through a suitable aperture 16 in the casing 11, and

is provided exteriorly of the casing 11 with a redueed'extension 17 forming an annular shoulder 18, provided with a screw-threaded portion 19' arranged to receive nuts 20-hold-' ing a flange 21 firmly sealed to the shoulder 18, The extension is adapted to receive va suitable driving j connection, not shown; and

the casing 11 is'provided with an annular casiug seat 28' surrounding the aperture, 16

and the crankshaft 14' passing therethrough.

Closinglthe' aperture 16, particularly to prevent the egress of refrigerant and the ingress of moisture, is a seal 23 comprising a substantially tubular flexible bellows24' corrugated to; increase its flexibility, having its innerend secured to an annular memberv 25 adapted to be held in sealing engagement with the-casing seat 28', and having its outer end secured to'an annular member 26 adapted to. be held in sealing engagement with the flange 21', a key 27 holding the bases 25 and bases 25 and 26 serving to hold the annular members 25 and 26 in'sealing engagement 1 pcetivel'y with the casing seat 28' and the 26 for rotati o njwith the shaft 14, and a con'r1- .pression spring 28 interposed between the but serving to ti'gh- .andsecurey seal the II aperture 16, and un er these'circumstances it will be a parent to those skilled in the art that the em iment of my invention herein shown accomplishes at least the principal ob- .ject of my invention.

At the; same time, also be obvious .to those skilled in the art-that the embodiment of my invention herein shown and deaperture and an exterior seat and a shaft ex tending through id apertures; of a seal structure including a tubular bellows, annular members secured to each end of the bellows, said members being keyed to and mov able longitudinally of said shaft, friction rings attached'to said annular members, a

seating plate clampedto a shoulder;of said shaft and a spring within'said bellows for rotatablyeand resiliently sealing said annular mem rs to said plate seats.

2. In combination .with a provided $5 with a shaft aperture, a plate for e said casing aperture provided with a bearing aperture, and an exterior seat and a shaft extending through said a rtures of a seal structure associated with said shaft including a tubular bellows, annular members secured to each end of said bellows and keyedto said shaft, a seat;

ing plate clamped to a shoulder of said shaft and means for rotatablyand resiliently sealing said annular members to said seats.

3. In combination with a'casing provided with a shaft aperture, a plate for closing said casing aperture provided with a bearing aperture and an exterior seat and a shaft ex- 1 tending through said apertures; of a seal 1 structure including a tubular bellows, annular members secured to each end of said bellows, a key fixing said annular members to rotate directly withv saidshaft, a plate clamped to a shoulder of said shaft and 'a spring within said bellows for pressing said annular members against said plates.

In testimony whereof I hereunto aflix my signature.

- CHARLES C. SPREEN. 

